Remember: behind every robot that turns evil is an engineer who specifically installed red LEDs into the eyes just for this occasion
Listen, that is a mandatory safety feature. This is like saying, “Behind every building that starts on fire, there’s an architect who specifically installed a fire alarm for just this occasion.” Yeah, of course.
If the eyes didn’t turn red when the robots turned evil, that wouldn’t stop it turning evil, it would just mean you don’t have any warning!